Siphon for driers



Nov. 11, 1952 H. G. CRAM SIPHON FOR DRIERS 3 Sheets-Sheet 1 Filed Sept. 13. 1950 INVENTOR HERVEY G. CRAM BY I 4 n1 ATTORNEYS NOV. 11, 1952 CRAM 2,617,205

SIPHON FOR DRIERS Filed Sept. 13, 1950 3 Sheets-Sheet 2 INVENTOR HERVEY G.CRAM

ATTORNEYS Nov. '11, 1952 H. 5. CRAM SIPHON FOR DRIERS SSheets-Sheet 3 Filed Sept. 13, 1950 INVENTOR HERVEY, G. CRAM ATTORNEYS Patented Nov. 11, 1952.

UNITED STATES PATENT OFFKIE SIPHON FOR DRIERS Hervey G. Cram, Appleton, Wis.

Application September 13, 1950, Serial No. 184,631

Claims. 1

This application appertains broadly to steam heated cylinders for drying a web or sheet in paper making machines, and more particularly to a novel syphon arrangement for removing condensate from a steam heated cylinder and said invention is an improvement over my prior United States Patents Nos. 1,919,416; 2,049,050; 2,224,857 and 2,299,530 issued to me respectively, on July 25, 1933; July 28, 1936, December 17, 1940 and October 20, 1942.

One of the primary objects of my present invention is to provide a steam joint construction having novel means for ensuring positive alignment of the steam joint body with the clamping ring carried by the cylinder trunnion, and with the pivotal slip ring disposed between the body and the trunnion, the construction being such that the horizontal section of the syphon will also be properly supported by the steam joint and in axial alignment with the center of the trunnion and cylinder.

Another salient object of this invention is to provide a novel syphon construction in which the inside syphon leg can be readily radially aligned with an operating hand lever for indicating the exact position of the inside leg in said cylinder or trunnion and the relation thereof to the outside syphon leg.

A further important object of the invention is to provide a support tube for the syphon and more particularly for the horizontal section of the syphon with a novel support between the tube and the inside syphon leg including a novel construction between the tube and syphon, whereby the syphon will have limited turning movement in the tube.

A still further object of the invention is to provide a novel syphon construction in which the syphon and tube can be readily removed from and inserted in the drying cylinder or drum, with means for accurately positioning the inside syphon leg in the cylinder or drum.

A still further important object of the invention is to provide means whereby the syphon and steam joint will be properly balanced and supported.

With these and other objects in view, the invention consists in the novel construction, arrangement, and formation of parts, as will be hereinafter more specifically described and claimed,

and illustrated in the accompanying drawings, in which drawings,

Figure 1 is a fragmentary, vertical section illustrating the novel syphon disposed within adrying cylinder or drum.

Figure 2 is an enlarged detail fragmentary sectional view, taken on the line 22 of Figure 1, looking in the direction of the arrows illustrating the improved steam joint.

Figure 3 is a vertical sectional view taken on the line 33 of Figure 1, showing the steam joint and steam inlet pipe in end elevation.

Figure 4 is a detail vertical sectional view taken on the line 4-4 of Figure 1, looking in the direction of the arrows illustrating the novel connection between the inside syphon leg and the supporting fork carried by the supporting tube.

Figure 5 is a detail horizontal sectional view taken on the line 5-5 of Figure 1, looking in the direction of the arrows illustrating the inlet syphon shoe.

Figure 6 is a detail vertical sectional view taken on the line 6-6 of Figure 1, looking in the direction of the arrows, showing the insidesyphon leg and illustrating the limited movement thereof relative to the supporting tube.

Figure 7 is a view similar to Figure l, but showing the syphon being removed from the cylinder through the steam joint.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter S generally indicates the novel syphon for a steam heated drying cylinder C.

The cylinder C is of the type now generally employed in drying a paper web or sheet and hence includes the outer cylindrical wall [0, and an end plate or hub l I. The axial center of the hub plate ll carries a hollow trunnion l2, which is mounted within suitable bearings (not shown) in the paper drying machine.

The syphon S includes a horizontal section 13, which normally extends through the trunnion l2 and into the cylinder and through a steam joint Hi. Thi steam joint I4 is coupled with the trunnion l2 so that the trunnion will have free turnin movement relative to the joint. This joint 10 will be later described in detail. The syphon also includes the inner syphon le l5, and the outer syphon leg l0, and the syphon section I3 is coupled with the inside syphon leg IS in a novel manner, which will also be later described.

The steam joint l4 includes a body I! and an inlet I8 and an outlet I9. The inner face of the outlet 19 is concaved to form a seat for the pivotal bearing ring 20. This ring 20 bears against a pipe joint section 2| which is firmly united to the trunnion l2 by a collar 22 and machine screws 23. The outer end of the joint pipe section 2! is provided with a flange 24. A

clamp ring is disposed about the pipe joint section 2| and suitable anti-friction bearings 25 are interposed between the clamp ring and the flange 24, so that the joint pipe section 21 will have free rotation within the clamp ring. The clamp ring 25 is coupled with the steam joint body H in a novel manner which will now be described.

The steam joint body H has formed thereon, preferably on opposite sides thereof, longitudinally extending substantially cylindrical enlargements 2'! having horizontal ways therethrough, and these enlargements slidably receive sleeves 28 fixed to the clamp ring 25. The sleeves 28 have a close sliding fit with the steam joint body I! and the body slides bodily toward the clamp ring. Enclosed within the sleeves 28 are compression springs 29 through which extend centralizing bolts 30, sliding on which are washers 3| which bear against the heads of the screws and the washers have bearing against the same, the inner ends of the compression springs 29. The outer ends of the compression springs bear against collars 32 which are fixed to the sleeves 28, adjacent to the outer ends thereof. The outer ends of the bolts have threaded thereon nuts 33, which bear against the outer faces of the tubular sections 21 of the body H of the steam joint. The adjustment of the nuts 33 determines the cushioning pull on the sleeves 28 and this cushioning pull is transferred to the clamping ring 25 and the pivotal slip collar 20. This provides a positive alignment of the steam, joint body II with the clamping ring 25 and this in turn also insures correct alignment of other parts, as will later appear.

The weight of the steam joint body 13', is approximately counter-balanced by the syphon S on the pivotal slip collar 28, and, the total weight of the steam joint body I! and the syphon S is supported by any preferred means, such as, the steam inlet pipe 34, the upper end of which is received within the inlet [8 of the body H. The steam pipe 34, is, of coiu'se, subject to changes in temperature and consequently, to expansion and contraction. Therefore, the steam inlet pipe includes upper and lower sections 35 and 36 coupled by an expansion joint 37.

In order to effect an accurate alignment of the steam joint body IT and the syphon S with the axis of the dryer cylinder, a supporting arrangement is provided, which embodies a sole plate 38 set in the floor and this sole plate encircles the lower section 36 of the steam inlet pipe 3 Secured to the sole plate 38 are a plurality of stay rods 39, which support a fiange 4% which is fixed to the upper section 35 of the steam inlet pipe 3G. The flange 40 is located in close proximity to the steam joint 14 and the upper and lower nuts 4! are carried by the stay rods 39 and engage the upper and lower faces of the flange 40. The expansion joint 3'! permits proper adjustment of the nuts 4|.

The outer end of the steam joint body H is closed by a cap 42 and the cap is removably held in place by machine screws 43. This cap 42 has a close and tight fit with the body 17, and is provided with a smooth shoulder 44, which snugly engages the inner surface of the body ll. Also formed on the cap is the inwardly extending supporting sleeve 45, which has fixed therein the horizontal supporting tube it, and this tube normally extends from the cap 42 through the trunnion l2 and into the dryer cylinder C. The tube 46 receives the horizontal section 13 of the syphon S and a packing gland A1 is carried by the head for this horizontal section 13. By detaching the cap 42 from the syphon body H, the entire syphon with the supporting tube 46 can be withdrawn from the cylinder C and its trunnion (2, as will later appear.

The upper end of the inside syphon leg I5 carries the syphon elbow 48 and the horizontal section 13 of the syphon threads into the upper end of the elbow. The elbow has formed thereon (see Figure 4), an enlargement E9, and this enlargement is received between the ears 58 of the fork member 5|, which is carried by the supporting tube 46. A pivot pin 52 extends through the enlargement 49 and the ears 58, which allows free swinging movement of the inner syphon leg IE on the supporting tube. The fork member 5| carries a limiting pin 53, which is received within a semi-circular slot 54 formed in the supporting tube 46 adjacent to its inner end. Consequently, the fork member 51 and the syphon leg [5 and other parts of the syphon have limited turning movement within the supporting tube.

The lower end of the syphon leg 15 has threaded thereon the syphon inlet shoe 55 and this shoe, see Fi ure 6, is provided with a restricted inlet 56. A wear flange 51 is removably attached to the inlet head and preferably has bearing engagement with the inner surface of the cylindrical outer wall of the dryer cylinder or drum, and in actual practice the flange 5'! wears into proper engagement with the inner face of the cylinder during the rotation thereof.

The outer leg it of the syphon is connected to the horizontal section l3 through an elbow 58 and a joint 59. Incorporated in the length of this syphon drop or outside leg i6, is a combination sight glass and expansion joint 68. This combination sight glass and expansion joint allows movement for expansion in accordance with the expansion of the steam pipe 35.

Secured to the horizontal section 13 of the syphon between the steam joint 14 and the syphon leg I6 is a hand crank 6!, the purpose of which will be later described.

In assembling the syphon with the dryer cylinder or drum C, and considering that the cap 42 is removed from the steam joint 14, and that the supporting tube 66 has already been assembled with the cap and the horizontal syphon pipe section 3 with the tube; then the inner leg 15 of the syphon is swung on its pivot 52 and is inserted, into the trunnion i2 through the cap opening in the steam joint 14, and the entire syphon is slid longitudinally through the trunnion, as shown in Figure '7. When the inner syphon leg reaches the cylinder, the same will drop down by gravity into the cylinder with the syphon head 55 engaging the inner surface of the cylinder. The cap 42 can now be secured in place by its screws 43, and by turning the crank fil, the horizontal syphon section I3 is threaded into the elbow 48 carried by the inner leg of the syphon (see Figure 1). When the section I3 is threaded to its fullest extent into the elbow 48, then the section l3 and the inner leg I5 can be turned as a unit, at which time the pin will move in the limiting slot 54. The crank BI is locked to the syphon pipe section [3 in exact radial alignment with the inner syphon leg l5, and by turning the crank, the syphon leg l5 can be raised or lowered to suit different syphcning conditions and the crank will indicate the position of the leg in the cylinder. After the assembling of the syphon in the cylinder, the syphon section I3 is connected to the outer syphon drop leg l6 through theuse of the elbow or the joint 59. When it is desired to remove the syphon, for any reason, from the cylinder, the joint 59 can be'taken apart and the cap is again removed and the entire syphon can be instantly pulled out of the cylinder. During the assembling of the syphon and the pulling of the syphon out, the packing gland can be suitably loosened or tightened as desired.

Great stress is laid on the lining up of the steam joint and the novel arrangement of the syphon itself in conjunction with the inner leg and the crank 6 l.

Changes in details may be made without departing from the spirit or the scope of this invention, but what I claim as new is:

1. In a steam heated dryer cylinder of the type including a cylindrical outer wall and an axially disposed hollow trunnion, a steam joint having rotatable connection with the trunnion and an outlet opening, a removable cap closing said opening, a supporting tube carried by said cap and extending entirely through said trunnion, a syphon including inner and outer legs and a connecting horizontal section extending through said cap and tube, means hingedly connecting the inner leg with the supporting tube, means detachably connecting the horizontal syphon section with the inner leg at its point of hinged connection with the supporting tube, means detachably connecting the outerleg with the horizontal section, and means for locating the horizontal section exteriorly of the cylinder and its steam joint.

2. In a steam heated dryer cylinder of the type including a. cylindrical outer wall and an axially disposed hollow trunnion, a steam joint having rotatable connection with the trunnion and an outlet opening, a removable cap closing said opening, a supporting tube carried by said cap and extending entirely through said trunnion, a syphon including inner and outer legs and a connecting horizontal section extending through said cap and tube, means hingedly connecting the inner leg with the supporting tube, means detachably connecting the horizontal syphon section with the inner leg at its point of hinged connection with the supporting tube, means detachably connecting the outer leg with the hori" zontal section, means for locating the horizontal section exteriorly of the cylinder and its steam joint, and means establishing limited rotation between the inner leg and the supporting tube upon connection of the horizontal section with the inner leg.

3. In a steam heated dryer cylinder of the type including a cylindrical outer wall and a hollow axially disposed trunnion, a steam joint having rotatable connection with the trunnion and a steam inlet and a right angularly extending opening, a cap detachably connected with the joint for closing said opening, a supporting tube rigidly secured to the cap and extending entirely through the trunnion and into inner leg, means pivotally securing the elbow to the supporting tube, the horizontal section being threaded into the elbow, means for limiting turning movement of the inn-er leg and elbow on the supporting tube when the hori-v zontal section is in tight connection with said elbow and a crank for turning said horizontal section connected with the horizontalsection exteriorly of the steam joint. I

4. The device as set forth in claim 3, and said crank being in direct radial'alignment with said inner leg. I

5. In a steam heated dryer cylinder of the type including an outer cylindrical wall and an axially disposed hollow trunnion, a steam joint having a rotatable connection with the trunnion and communicating therewith and having an opening in axial alignment with the trunnion, a detachable cap for closing said opening, a supporting tube rigidly secured to the cap and extending entirely through a trunnion and into the cylinder, a forked head mounted for turning movement on the inner end of the supporting tube, means limiting the turning movement of the forked head relative to the tube, an inner syphon leg, an elbow carried by the upper end of the leg having an interiorly threaded arm in axial alignment with the tube when the inner leg is at right angles to the tube, said elbow having a pivot ear received in the fork, a pivot pin extending through the ear and the fork to permit swinging movement of the leg on the fork with the leg either at right angles to the tube or in substantially a line with the tube, and a horizontal syphon pipe section extending through the steam joint and tube and adapted to be threaded tight into the arm of the elbow when the leg is at right angles to the tube.

6. The subject matter asset forth in claim 5, and a crank secured to the outer end of the horizontal syphon pipe section in radial alignment with the inner leg.

7. The subject matter of claim 5, and said means for limiting turning movement of the forked head relative to the supporting tube in cluding a limiting pin carried by the head and said tube having a semicircular guide slot receiving the pin.

8. In a steam heated dryer cylinder of the type including a hollow trunnion, a steam joint for said trunnion, a pipe joint section rigid on the outer end of the trunnion for rotation therewith a pivotal slip collar between the steam joint and the pipe joint section, a clamp ring having rotatable connection with the pipe joint section, said clamp ring having sleeves fixed thereto slidably extending into side portions of the steam joint, a collar on the inner end of each sleeve, centralizing screws extending through the collars and into the sleeves, com pression springs on the screws between the collars and the inner ends of the screws, and nuts adjustable on said screws engaging the outer surface of the steam joint.

9. In a steam heated dryer cylinder of the type having a hollow trunnion, a pipe joint section rigid with the trunnion a steam joint connection for said trunnion including a hollow body, a pivotal slip collar between said body and pipe joint section, said body having radially projecting hollow bosses, a clamp ring having rotatable connection with the pipe joint section, and means for centralizing the body on said trunnion and pipe joint section including guide sleeves rigidly secured to the clamp ring slidably extending into the hollow bosses, stops rigidly secured to the inner ends of the sleeves, centralizing screws in said bosses extending through the stops and intothe sleeves, compression springs on said screws confined between the inner ends of the screws and the stops, and adjustable nuts on the outer ends of said screws bearing against said hollow bosses for moving the screws in and out.

10. In a steam heated dryer cylinder of the type including a hollow trunnion, a steam joint for said trunnion including a steam outlet and a steam inlet, means centralizing the joint on the trunnion, a syphon for the cylinder supported by the joint, and means for supporting the joint including a vertically disposed steam conduit pipe connected to the joint and communicating with its inlet, said pipe including slidably connected upper and lower sections, a

8 sole plate secured to a support around the lower section, a ring clamped to the upper section, and stay rods connecting the sole plate with the clamp ring. 4

HERVEY G. CRAM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,056,562 Bridge Oct. 6, 1936 2,297,094 Armstrong et a1. Sept. 29, 1942 

